DIN EN ISO 6789:2003 Type 11, Class A. Factory checked calibration certificate. DREMOMETER Adjustable Torque Wrench. Easy adjustable torque wrench featuring automatic short path actuation with tactile impulse and audible signal. Easy adjustment with button at the end of the handle Scale in Nm, lbf.in & lbf.ft Lightweight Aluminium alloy construction Lever mechanism for low wear & long life ±3% accuracy Square drive and fulcrum are on the same axis maintaining accuracy even when used with extension tube Square drive has ball locking device